discourse/spec/models/user_stat_spec.rb
Sam 236c755d62 FIX: do not store key tracking last seen time indefinitely
UserStat has some special logic to keep adding time read if repeat calls
are made in intervals less than 100 seconds. This is called regularly
when we update read timings on a topic.

We only need to cache this key in redis for 100 seconds, however previously
we would keep it forever, 1 key per user. This has potential of bloating
a very large amount of keys for no longer active users in redis.
2018-12-03 08:35:26 +11:00

116 lines
3.2 KiB
Ruby

require 'rails_helper'
describe UserStat do
it "is created automatically when a user is created" do
user = Fabricate(:evil_trout)
expect(user.user_stat).to be_present
# It populates the `new_since` field by default
expect(user.user_stat.new_since).to be_present
end
context '#update_view_counts' do
let(:user) { Fabricate(:user) }
let(:stat) { user.user_stat }
context 'topics_entered' do
context 'without any views' do
it "doesn't increase the user's topics_entered" do
expect { UserStat.update_view_counts; stat.reload }.not_to change(stat, :topics_entered)
end
end
context 'with a view' do
let(:topic) { Fabricate(:topic) }
let!(:view) { TopicViewItem.add(topic.id, '127.0.0.1', user.id) }
before do
user.update_column :last_seen_at, 1.second.ago
end
it "adds one to the topics entered" do
UserStat.update_view_counts
stat.reload
expect(stat.topics_entered).to eq(1)
end
it "won't record a second view as a different topic" do
TopicViewItem.add(topic.id, '127.0.0.1', user.id)
UserStat.update_view_counts
stat.reload
expect(stat.topics_entered).to eq(1)
end
end
end
context 'posts_read_count' do
context 'without any post timings' do
it "doesn't increase the user's posts_read_count" do
expect { UserStat.update_view_counts; stat.reload }.not_to change(stat, :posts_read_count)
end
end
context 'with a post timing' do
let!(:post) { Fabricate(:post) }
let!(:post_timings) do
PostTiming.record_timing(msecs: 1234, topic_id: post.topic_id, user_id: user.id, post_number: post.post_number)
end
before do
user.update_column :last_seen_at, 1.second.ago
end
it "increases posts_read_count" do
UserStat.update_view_counts
stat.reload
expect(stat.posts_read_count).to eq(1)
end
end
end
end
describe 'update_time_read!' do
let(:user) { Fabricate(:user) }
let(:stat) { user.user_stat }
it 'always expires redis key' do
# this tests implementation which is not 100% ideal
# that said, redis key leaks are not good
stat.update_time_read!
ttl = $redis.ttl(UserStat.last_seen_key(user.id))
expect(ttl).to be > 0
expect(ttl).to be <= UserStat::MAX_TIME_READ_DIFF
end
it 'makes no changes if nothing is cached' do
$redis.del(UserStat.last_seen_key(user.id))
stat.update_time_read!
stat.reload
expect(stat.time_read).to eq(0)
end
it 'makes a change if time read is below threshold' do
freeze_time
UserStat.cache_last_seen(user.id, (Time.now - 10).to_f)
stat.update_time_read!
stat.reload
expect(stat.time_read).to eq(10)
end
it 'makes no change if time read is above threshold' do
freeze_time
t = Time.now - 1 - UserStat::MAX_TIME_READ_DIFF
UserStat.cache_last_seen(user.id, t.to_f)
stat.update_time_read!
stat.reload
expect(stat.time_read).to eq(0)
end
end
end